CN112397901A - Signal receiving angle adjusting device of high-rise signal top antenna - Google Patents

Signal receiving angle adjusting device of high-rise signal top antenna Download PDF

Info

Publication number
CN112397901A
CN112397901A CN202011158817.3A CN202011158817A CN112397901A CN 112397901 A CN112397901 A CN 112397901A CN 202011158817 A CN202011158817 A CN 202011158817A CN 112397901 A CN112397901 A CN 112397901A
Authority
CN
China
Prior art keywords
block
antenna
rod
mounting
movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011158817.3A
Other languages
Chinese (zh)
Inventor
周毅瑾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Rongxiu Technology Co ltd
Original Assignee
Guangzhou Rongxiu Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Rongxiu Technology Co ltd filed Critical Guangzhou Rongxiu Technology Co ltd
Priority to CN202011158817.3A priority Critical patent/CN112397901A/en
Publication of CN112397901A publication Critical patent/CN112397901A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/04Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
    • H01Q3/06Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation over a restricted angle
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The invention relates to the technical field of communication signals and discloses a signal receiving angle adjusting device of a high-rise signal top antenna. The movable blocks are driven to move through the extension and the shortening of the telescopic structures, the limiting racks meshed with the gears on the two sides are installed above the movable blocks on the two sides, the movable blocks move, the racks move to drive the gears to rotate, one ends of the antennas are lifted up, the other ends of the antennas are taken down, simple installation and disassembly are achieved, connection such as nuts is avoided, operation time is increased when the antennas are replaced and installed, operation difficulty is increased, and work efficiency is improved.

Description

Signal receiving angle adjusting device of high-rise signal top antenna
Technical Field
The invention relates to the technical field of communication signals, in particular to a signal receiving angle adjusting device of a high-rise signal top-mounted antenna.
Background
The strength of the communication limit number can be changed according to the distance between the intelligent equipment and the signal tower and the signal strength of the signal tower, the signal tower is generally more than 30 meters, and the number of high-rise buildings is more than 50 meters.
If the signal of antenna causes the signal badly because of its installation angle is uncomfortable, will be very difficult when adjusting the antenna at signal tower top, the staff need climb to the top of signal tower and adjust it, and high altitude construction can cause unexpected emergence. When the antenna broke down, also can appear influencing to surrounding signal, current mounting means to the antenna is connected through screw and nut and is fixed, and this kind of mode makes and need expend a large amount of time when equipment broke down and dismantle and install, expends a large amount of time, brings inconvenience for the maintenance workman.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the signal receiving angle adjusting device of the high-rise signal top-mounted antenna, which has the advantages that the angle of the antenna is mechanically adjusted, manual adjustment is not needed, the accident occurrence rate is reduced, the signal transmitting device is convenient to disassemble and assemble, the time for assembling and disassembling is saved, the efficiency is improved, and the accident caused by the fact that the angle of the antenna needs to be adjusted by climbing is solved. The existing installation mode of the antenna is fixed by connecting the screw and the nut, and the mode causes the problem that a great deal of time is consumed for dismounting and installing when equipment breaks down, and the problem that a great deal of time is consumed and inconvenience is brought to maintenance workers.
(II) technical scheme
In order to realize the purpose that the angle of the antenna is adjusted by the machine without manual adjustment and the accident incidence rate is reduced, the invention provides the following technical scheme: the utility model provides a high-rise signal takes signal reception angle adjusting device of top antenna, includes the mobile jib, the upper end swing joint of mobile jib has the threaded rod, the outside movable mounting of threaded rod has the connecting block, the outside movable mounting of even connecting block has the dwang, the lower extreme fixed mounting of mobile jib has the fixed block, the outside movable mounting of fixed block has the mounting panel, the movable block is installed to the upper end of mounting panel, the left side fixed mounting of movable block has the connecting rod, the outside movable mounting of movable block has extending structure, the top movable mounting of mounting panel has the antenna, the left side movable mounting of antenna has the left gear, the right side movable mounting of antenna has the right gear.
Preferably, the top of threaded rod is provided with the lightning rod, and the inside of connecting block is provided with the structure that corresponds with the threaded rod screw thread, and the outside of connecting block is provided with the junction, the upper end swing joint of junction and dwang.
Preferably, the one end that the connecting block was kept away from to the dwang and the middle part swing joint of mounting panel, the outside of fixed block is provided with the junction, the lower extreme of mounting panel and the junction swing joint of fixed block, the middle part swing joint of movable rod and dwang is passed through on the top of mounting panel.
Preferably, the mounting plate is provided with two limiting blocks above, the middle of each limiting block is provided with two connecting holes, the device is provided with a set of moving blocks, the number of the moving blocks is three, the moving blocks and the limiting blocks are indirectly distributed on one side, the middle of each moving block is provided with two connecting holes, the device is provided with a set of connecting rods, the number of the connecting rods is two, and the connecting rods penetrate through the connecting holes formed in the middle of the moving blocks and the limiting blocks.
Preferably, the surface of first stopper and second movable block installs extending structure's both ends respectively, extending structure's surface mounting has the poker rod, and the actuating lever is installed to the inboard of poker rod, installs the stopper in the actuating lever, and extending structure's the outside is the cylinder, and the stock is installed to the inboard, and vertical pole is installed on the top of stock, and spread groove about spread groove, spread groove and stopper swing joint are seted up at vertical pole's middle part.
Preferably, the right gear and the left gear are of two structures with the same size and shape, support grooves are arranged on the left side and the right side of the mounting plate, and the left gear and the right gear are mounted in the support grooves in a bearing mode.
Preferably, the upper ends of the two side moving blocks close to one side of the antenna are respectively provided with a limiting rack plate, and the two side limiting rack plates are meshed with the two side gears.
(III) advantageous effects
Compared with the prior art, the invention provides a signal receiving angle adjusting device of a high-rise signal top-mounted antenna, which has the following beneficial effects:
1. this high-rise signal takes signal reception angle adjusting device of top antenna, and this high-rise signal of manual adjustment takes signal reception angle adjusting device of top antenna makes the connecting block reciprocate at the threaded rod through the rotation of threaded rod, because below fixed block rigidity, so the dwang tie point rotates on the connecting block, and then makes the antenna angle of installation on the mounting panel change. The antenna base station can be adjusted according to mechanical rotation adjustment when signals of the antenna base station due to the fact that the angle position is unstable, and accidents caused by human factors are avoided.
2. This high-rise signal takes signal reception angle adjusting device of top antenna, the extension through extending structure drives the movable block with shortening and removes, and the top installation of both sides movable block and both sides gear engagement's spacing rack, the movable block removes, the rack removes and drives the gear rotation, make the one end of antenna lift up, will take off with the other end again can, realized simple and easy installation and dismantlement, avoid using connections such as nut, and increase operating time when changing and installing the antenna and add the operation degree of difficulty, and the work efficiency is improved.
Drawings
FIG. 1 is a schematic view of a connection relationship structure before the angle adjustment of the integral antenna of the present invention, wherein the angle between the mounting plate and the vertical horizontal plane is θ 1;
FIG. 2 is a schematic view of the connection relationship of the antenna after the angle adjustment, in which the angle between the mounting plate and the vertical horizontal plane is θ 2;
FIG. 3 is a schematic diagram of a moving block of the present invention before moving;
fig. 4 is a schematic structural diagram of the moving block of the present invention after moving.
In the figure: 1. a main rod; 2. a threaded rod; 3. connecting blocks; 4. rotating the rod; 5. a fixed block; 6. mounting a plate; 7. a moving block; 8. a connecting rod; 9. a telescopic structure; 10. an antenna; 11. a left gear; 12. and a right gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a signal receiving angle adjusting device of a high-rise signal top-end antenna comprises a main rod 1, a threaded rod 2 is movably connected to the upper end of the main rod 1, a connecting block 3 is movably mounted on the outer side of the threaded rod 2, a lightning rod is arranged at the top of the threaded rod 2, a structure corresponding to the threaded rod 2 in a threaded mode is arranged inside the connecting block 3, a rotating rod 4 is movably mounted on the outer side of the connecting block 3, a connecting position is arranged on the outer side of the connecting block 3, and the connecting position is movably connected with the upper end of the rotating rod. The lower extreme fixed mounting of mobile jib 1 has fixed block 5, the outside movable mounting of fixed block 5 has mounting panel 6, the top of mounting panel 6 is provided with two stoppers, the middle part of stopper is provided with two connecting holes, dwang 4 keeps away from the one end of connecting block 3 and the middle part swing joint of mounting panel 6, the outside of fixed block 5 is provided with the junction position, the lower extreme of mounting panel 6 and the junction position swing joint of fixed block 5, the middle part swing joint of movable rod and dwang 4 is passed through on the top of mounting panel 6. The moving block 7 is installed to the upper end of mounting panel 6, and the device is provided with a set of movable block 7, and a set of quantity is three, and movable block 7 distributes in one side with the stopper is indirect, and the middle part of movable block 7 is provided with two connecting holes, and the left side fixed mounting of movable block 7 has connecting rod 8, and the device is provided with a set of connecting rod 8, and a set of quantity is two, and connecting rod 8 runs through in the connecting hole that movable block 7 and stopper middle part set up. The outside movable mounting of movable block 7 has extending structure 9, installs extending structure 9's both ends respectively on the surface of first stopper and second movable block 7, and extending structure 9's surface mounting has the poker rod, and the actuating lever is installed to the inboard of poker rod, installs the stopper in the actuating lever, and extending structure 9's the outside is the cylinder, and the stock is installed to the inboard, and vertical pole is installed on the top of stock, and spread groove, spread groove and stopper swing joint about the middle part of vertical pole is seted up. An antenna 10 is movably mounted above the mounting plate 6, a left gear 11 is movably mounted on the left side of the antenna 10, and a right gear 12 is movably mounted on the right side of the antenna 10. The right gear 12 and the left gear 11 are of the same size and shape, support grooves are arranged on the left side and the right side of the mounting plate 6, and the left gear 11 and the right gear 12 are mounted in the support grooves in a bearing mode. The upper ends of the two side moving blocks 7 close to one side of the antenna 10 are respectively provided with a limiting rack plate, and the two side limiting rack plates are meshed with the two side gears
The working principle is that as the connecting block 3 is internally provided with a structure corresponding to the thread of the threaded rod 2, when the threaded rod 2 rotates, the connecting block 3 moves up and down outside the threaded rod 2. Because the outside of connecting block 3 is provided with the connection position, the upper end swing joint of connection position and dwang 4. The one end that connecting block 3 was kept away from to dwang 4 and the middle part swing joint of mounting panel 6, and the outside of fixed block 5 is provided with the junction, the lower extreme of mounting panel 6 and the junction swing joint of fixed block 5, and the middle part swing joint of movable rod and dwang 4 is passed through on the top of mounting panel 6. Therefore, the up-down movement of the connecting block 3 drives the rotating rod 4 to rotate at the connecting position, the fixing block 5 is fixed outside the main rod 1, the angle of the mounting plate 6 is changed, and the angle of the antenna 10 with the surface mounted on the mounting plate 6 is changed at the same time.
Because extending structure 9's surface mounting has the poker rod, the actuating lever is installed to the inboard of poker rod, install the stopper in the actuating lever, extending structure 9's the outside is the cylinder, the stock is installed to the inboard, vertical pole is installed on the top of stock, the spread groove about the middle part of vertical pole is seted up, spread groove and stopper swing joint, so when the poker rod of rotating the surface, the rotation can take place equally to inside actuating lever, the stopper of installation at the actuating lever will promote vertical pole and remove, and then make the stock remove about in the cylinder. Because the top of mounting panel 6 is provided with two stoppers, and the middle part of stopper is provided with two connecting holes, and the device is provided with a set of movable block 7, and a set of quantity is three, and movable block 7 distributes in one side with the stopper is indirect, installs the both ends of extending structure 9 respectively on the surface of first stopper and second movable block 7, so extending and shortening of extending structure 9 can drive the removal about second movable block 7. Because the middle part of movable block 7 is provided with two connecting holes, the device is provided with a set of connecting rod 8, and a set of quantity is two, and connecting rod 8 runs through in the connecting hole that movable block 7 and stopper middle part set up, so movable block 7 moves about under the holistic effect of connecting rod 8. Because the right gear 12 and the left gear 11 are two structures with the same size and shape, a support groove is arranged on the left side and the right side of the mounting plate 6, the left gear 11 and the right gear 12 are arranged in the support groove in a bearing mode, the upper ends of the two side moving blocks 7, which are close to one side of the antenna 10, are respectively provided with a limiting rack plate, the two side limiting rack plates are meshed with the two side gears, the moving blocks 7 can move to drive the limiting racks, the moving racks drive the gears on the two sides to rotate, and the gears on the other sides can be tilted upwards under the rotation of the gears on the other sides when the gears on the other sides lose the limitation of the limiting racks and then the other.
To sum up, this high-rise signal of manual adjustment takes signal reception angle adjusting device of top antenna, the rotation through threaded rod 2 makes connecting block 3 reciprocate at threaded rod 2, because 5 rigidity of below fixed block, so the dwang 4 tie point rotates on connecting block 3, and then makes the antenna 10 angle of installation on mounting panel 6 change. The adjustment can be carried out according to mechanical rotation adjustment when the signals of the base station antenna 10 caused by the angular position are unstable, and accidents caused by human are avoided.
This high-rise signal takes signal reception angle adjusting device of top antenna, extension and shortening through extending structure 9 drive movable block 7 and remove, and the top installation of both sides movable block 7 and the spacing rack of both sides gear engagement, movable block 7 removes, the rack removes and drives the gear rotation, make the one end of antenna 10 lift up, will take off another end again can, realized simple and easy installation and dismantlement, avoid using connections such as nut, and increase operating time when changing and installing antenna 10, increase the operation degree of difficulty, improve work efficiency.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a high-rise signal takes signal reception angle adjusting device of top end antenna, includes mobile jib (1), its characterized in that: the upper end swing joint of mobile jib (1) has threaded rod (2), the outside movable mounting of threaded rod (2) has connecting block (3), the outside movable mounting of even connecting block (3) has dwang (4), the lower extreme fixed mounting of mobile jib (1) has fixed block (5), the outside movable mounting of fixed block (5) has mounting panel (6), movable block (7) are installed to the upper end of mounting panel (6), the left side fixed mounting of movable block (7) has connecting rod (8), the outside movable mounting of movable block (7) has extending structure (9), the top movable mounting of mounting panel (6) has antenna (10), the left side movable mounting of antenna (10) has left gear (11), the right side movable mounting of antenna (10) has right gear (12).
2. The apparatus of claim 1, wherein the antenna comprises: the top of threaded rod (2) is provided with the lightning rod, and the inside of connecting block (3) is provided with the structure that corresponds with threaded rod (2) screw thread, and the outside of connecting block (3) is provided with the junction, the upper end swing joint of junction and dwang (4).
3. The apparatus of claim 1, wherein the antenna comprises: the one end of connecting block (3) and the middle part swing joint of mounting panel (6) are kept away from in dwang (4), and the outside of fixed block (5) is provided with the connection position, the lower extreme of mounting panel (6) and the connection position department swing joint of fixed block (5), and the middle part swing joint of movable rod and dwang (4) is passed through on the top of mounting panel (6).
4. The apparatus of claim 1, wherein the antenna comprises: the device is characterized in that two limiting blocks are arranged above the mounting plate (6), two connecting holes are formed in the middle of each limiting block, a set of moving blocks (7) are arranged, the number of the moving blocks is three, the moving blocks (7) and the limiting blocks are indirectly distributed on one side, two connecting holes are formed in the middle of each moving block (7), a set of connecting rods (8) are arranged in the device, the number of the connecting rods (8) is two, and the connecting rods (8) penetrate through the connecting holes formed in the middle of the moving blocks (7) and the limiting.
5. The apparatus of claim 1, wherein the antenna comprises: the surface of the first limiting block and the surface of the second moving block (7) are respectively provided with two ends of a telescopic structure (9), the surface of the telescopic structure (9) is provided with a poke rod, a driving rod is arranged on the inner side of the poke rod, a limiting block is arranged in the driving rod, the outer side of the telescopic structure (9) is provided with a cylinder, a long rod is arranged on the inner side of the cylinder, a vertical rod is arranged at the top end of the long rod, a left connecting groove and a right connecting groove are formed in the middle of the vertical rod.
6. The apparatus of claim 1, wherein the antenna comprises: the right gear (12) and the left gear (11) are of two structures with the same size and shape, supporting grooves are arranged on the left side and the right side of the mounting plate (6), and the left gear (11) and the right gear (12) are arranged in the supporting grooves in a bearing mode.
7. The apparatus of claim 1, wherein the antenna comprises: and the upper ends of the two side moving blocks (7) close to one side of the antenna (10) are respectively provided with a limiting rack plate, and the two side limiting rack plates are meshed with the gears at the two sides.
CN202011158817.3A 2020-10-26 2020-10-26 Signal receiving angle adjusting device of high-rise signal top antenna Withdrawn CN112397901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011158817.3A CN112397901A (en) 2020-10-26 2020-10-26 Signal receiving angle adjusting device of high-rise signal top antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011158817.3A CN112397901A (en) 2020-10-26 2020-10-26 Signal receiving angle adjusting device of high-rise signal top antenna

Publications (1)

Publication Number Publication Date
CN112397901A true CN112397901A (en) 2021-02-23

Family

ID=74596719

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011158817.3A Withdrawn CN112397901A (en) 2020-10-26 2020-10-26 Signal receiving angle adjusting device of high-rise signal top antenna

Country Status (1)

Country Link
CN (1) CN112397901A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113079594A (en) * 2021-04-14 2021-07-06 武汉盛景通联科技有限公司 Installation mechanism of 5G basic station
CN113131177A (en) * 2021-02-26 2021-07-16 上海国动网络通信有限公司 5G communication base station for low-voltage line communication and use method
CN113178682A (en) * 2021-05-06 2021-07-27 深圳市中天迅通信技术股份有限公司 Base station antenna and base station radio frequency equipment for 5G network
CN113175594A (en) * 2021-04-23 2021-07-27 刘建慧 Automatic remove flexible communication signal tower
CN113745800A (en) * 2021-09-10 2021-12-03 北京智星空间技术研究院有限公司 Antenna unfolding device of synthetic aperture radar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113131177A (en) * 2021-02-26 2021-07-16 上海国动网络通信有限公司 5G communication base station for low-voltage line communication and use method
CN113079594A (en) * 2021-04-14 2021-07-06 武汉盛景通联科技有限公司 Installation mechanism of 5G basic station
CN113079594B (en) * 2021-04-14 2022-09-06 武汉盛景通联科技有限公司 Installation mechanism of 5G basic station
CN113175594A (en) * 2021-04-23 2021-07-27 刘建慧 Automatic remove flexible communication signal tower
CN113178682A (en) * 2021-05-06 2021-07-27 深圳市中天迅通信技术股份有限公司 Base station antenna and base station radio frequency equipment for 5G network
CN113178682B (en) * 2021-05-06 2022-08-12 深圳市中天迅通信技术股份有限公司 Base station antenna equipment for 5G network
CN113745800A (en) * 2021-09-10 2021-12-03 北京智星空间技术研究院有限公司 Antenna unfolding device of synthetic aperture radar

Similar Documents

Publication Publication Date Title
CN112397901A (en) Signal receiving angle adjusting device of high-rise signal top antenna
CN112081400B (en) Prefabricated wallboard installing the system of assembled
CN203850679U (en) Elevating disassembly and assembly platform with limiting support for current transformer in high-voltage switchgear
CN202004346U (en) Adjustable installation platform for motor driven operating mechanism case
CN216624572U (en) 5G communication base station with independent adjusting antenna
CN110805354A (en) 5G signal transmitting tower erection equipment
CN102206965B (en) Mechanism for regulating bodies of communication lift tower
CN209804527U (en) GIS keeps apart compound earthing switch convenient to equipment
CN208365082U (en) A kind of railway signal auxiliary fixing device
CN208441599U (en) The lightning-arrest line bracket of angle tower and angle tower
CN103128474B (en) Tower crane boom tool
CN219017913U (en) Automatic adjusting device for plate-shaped antenna
CN219999262U (en) Various steel tile roof photovoltaic power plant mounting structure
CN208236073U (en) A kind of lift communication base station iron tower
CN205376734U (en) Shortwave antenna stand column modular structure
CN220851568U (en) Video monitoring system for electric power construction site
CN216042041U (en) Prefabricated plate mounting structure stable in connection
CN209358477U (en) A kind of flexible photovoltaic bracket
CN203453716U (en) Standardized steel frame foundation for communication device outdoor base station
CN205376735U (en) Adopt short wave antenna of novel stand
CN211624662U (en) Ground wireless monitoring and mounting device for rail transit vehicle
CN216406359U (en) Communication tower with simple structure
CN218300217U (en) Positioning device for 5G base station construction
CN219219842U (en) Skylight skeleton mounting structure
CN219239084U (en) Tower machine operation platform mounting structure

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20210223